This test measures the amount of potassium in the fluid portion (serum) of the blood. Potassium (K+) helps nerves and muscles communicate. It also helps move nutrients into cells and waste products out of cells.
You may have this test to diagnose or monitor kidney disease. The most common cause of high potassium levels is kidney disease.
Potassium is important to heart function. Your provider may order this test if you have signs of high blood pressure or heart problems.
The normal range is 3.7 to 5.2 mEq/L.
*Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
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